GB2212869A - Elastomeric pump casing seal - Google Patents

Elastomeric pump casing seal Download PDF

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Publication number
GB2212869A
GB2212869A GB8827190A GB8827190A GB2212869A GB 2212869 A GB2212869 A GB 2212869A GB 8827190 A GB8827190 A GB 8827190A GB 8827190 A GB8827190 A GB 8827190A GB 2212869 A GB2212869 A GB 2212869A
Authority
GB
United Kingdom
Prior art keywords
casing
seal
elastomeric
casing part
base
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB8827190A
Other versions
GB2212869B (en
GB8827190D0 (en
Inventor
Leslie Alfred William Ray
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Warman International Ltd
Original Assignee
Warman International Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Warman International Ltd filed Critical Warman International Ltd
Publication of GB8827190D0 publication Critical patent/GB8827190D0/en
Publication of GB2212869A publication Critical patent/GB2212869A/en
Application granted granted Critical
Publication of GB2212869B publication Critical patent/GB2212869B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
    • F16J15/104—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure
    • F16J15/106—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure homogeneous
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/086—Sealings especially adapted for liquid pumps

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

A seal for the casing joint of a two-piece centrifugal pump comprises an elastomeric sealing member 8 of J-shaped cross-section located in a recess of the volute casing 2 and locating a side liner 3. A frame plate 1 is attached to the side liner 3 and to the volute casing 2 to form the pump casing in which impeller 7 rotates. The shape of the seal avoids the need for accurate machining of the mating faces of the pump casing. <IMAGE>

Description

1 SW/2013 ELASTOMERIC PUMP CASING SEAL- 2212869 The present invention
relates to a method of sealing the casing joint or joints of a two or more piece casing of a centrifugal pump and in particular to such joints for centrifugal slurry pump.
Because conventional slurry pumps are - required to withstandabrasive conditions it is necessary that they are constructed of alloys of high hardness thus making machining of the parts expensive and difficult. To ensure correct alignment and sealing, it necessary that the casing joint of these pumps are machined to exact requirement. This, therefore, increases the cost in the production of such pumps.
Typically, prior art methods for sealing such joints are shown in figures 1 to 3.
Figure 1 illustrates a "U" seal 4 which is located into a recess in the frame plate 1. The mating surfaces 14 and 15 of the volute casing 2 and the side liner 3, have to be machined to exact tolerances to ensure an accurate fit.
The "U" seal 4 is compressed against the outer surface of the volute casing 2 and side liner 3, on either side of the join, to provide the seal against the pumping medium travelling through an interface between the faces 14 and 15, A further method of sealing is shown in figure 2 which utilises and 11011 ring seal 5. The mating faces 16 and 17 respectively, of the volute casing 2 and side liner 3 are machined to provide a smooth sealing surface. A chamfered recess 18 is formed on the outer corner of the volute casing 2 or the side liner 3 into which is compressed the "0" ring.5.
f SW/2013 In the scaling position the volute casing 2 and side liner 3 are locked together with the faces 16 and 17 in intimate contact. The 0011 ring 5 is compressed in the recess 18 by the frame plate 1 and the surface 17 of the sida liner 3 to form a seal against any pumping medium which travels through the_ interface of the faces 16 and 17.
A further prior method is shosqn in figure 3 utilising a "V' ring seal. in this method, the f aces 19 and 20 are. machined and the "V" ring 6 inserts there between. When the volute casing 2 and the side liner 3 are tightened together with the frame plate 2 the "V" ring 6 is compressed to provide a leak-free seal. it is essential that the surfaces 19 and 20 are accurately machined to ensure proper compression of the rubber to effect a leak- free seal.
The present invention seeks to ameliorate the necessity from machining as is required in the prior art method.
In one broad form the present invention provides an elastomeric casing seal which provides location between the mating parts of the casing as well as sealing between the 20casing parts.
Preferably, the seal has tapered faces which mate with tapered faces on at least one of the jointing faces of the casing.
The present invention will now be described by way of 11 example with reference to the accompanying drawings in which; - Figure 4 shows a schematic cross-section view of the centrifugal slurry pump containing one embodiment of the present invention; and t, 1 1 SW/2013 - Figure 5 shows a detailed sectional view of the seal shown in figure 4.
As shown in the figure, 4 a seal 8 of "J shaped cross-section is located in the-recess on the volute easing 2 and locates the side liner 3 and seals between the side-liner 3 and the volute casing 2, with frame plate I attached to the side liner 3 and the volute casing 2 to form the slurry pump casing in which the impeller 7 rotates.
A detailed view of the seal 6 is shown in figure S. The face 10 of the side liner 3 is tapered. This taper mates with the taper on the -inner face 21 of the leg 22 of the seal 8, thus radially locating the side liner 3 in relation to the volute casing 2, without providing a radially sealing joint. The elastomeric material of the seal 8 is compressed between the face 12 of the side liner 3 and the face 13 of the volute casing 2 in the axial direction to provide a liquid-tight joint. The leg 11 of the "J" of the seal 8 engage around the annular portion 23 of the side liner 3 to postively locate the seal 8 to prevent extrusion of the seal from the joint under pressure. The face 24 of the leg 11 is tapered to prevent erosion at the mating joint of the volute casing 2 and side liner 3.
Whilst the seal has been shown in the above embodiment as "J" shaped, it is possible to utilise a L" shaped seal or other suitable shapes to accompany the project of the present invention. rurther, the annular prRiection 23 could be located on the face 13 of the volute casing 2 with complementary recess located in the bottom of the "J" of the seal.
i 4 - SW/2013 Further, the inner face 21 could be non-tapered while the outer face 9 is tapered to provide correct radial location. A further annular projection could be located on the opposite face of either the volute easing 2 or the side line 3 to provide a double lock for the seal 8 which can be of any required shape.
Purther,the present invention provides a joint which requires no machining on the mating faces, yet provides a liquid-tight. seal at less cost than the existing prior art seal.
1 11 SW/2013

Claims (1)

1. An elastomeric casing seal which provides location between a first casing part which mates within a recess in a second casing part as well as sealing between the two casing parts. 2. Elastomeric casing seal according to claim I wherein the seal is substantially L-shaped in cross section, with the long arm of the L having at least one of its surfaces which slopes from its free end which is nartower in width than the width of the base of the long arm, to mate with a tapered face of one of the jointing faces of the first or second casing parts and with the portion of the seal forming the underside of the base of the L adapted to be located on a shoulder of the second casing. 3. An elastomeric casing seal according to claim 2 wherein the upper surface of the seal forming the base of the L has a recess to receive a projection from the first casing part, to locate that casing part relative to the second casing part. 4. An elastomeric casing seal according to claim 2 wherein the upper surface of the seal forming the base of the L has a projection to mate within a recess in the first casing part, to locate that casing part relative to the second casing part. S. An elastomeric casing seal according to claim 2 wherein the lower surface of the seall forming the base of the L, has a recess to receive a projection from the second casing part, to locate that part of the casing relative to the first casing part. 6. An elastomeric casing seal according to claim 2 wherein t - 6 SW/ 2 0 13 the lower surface of the seal forming the base of the L has a projection to mate within a recess in the second casing part, to locate that casing part relative to the first casing part. 7. An elastomeric easing seal according to any one of the preceding claims wherein the seal is annulfir. 8. An elastomeric casing seal according to any one of the preceding claims wherein the sloping surface of the long arm of the Lis its inner surface to mate with a tapered surface of the first casing.
9. An elastomeric seal according to any one of the preceding claims wherein the portion of the seal which forms the free end of the base of the L, in use, slopes upwardly from the edge of the shoulder of the second casing part to abut against the first casing part.
10. An elastomeric seal substantially as hereinbefore described with reference to figures 4 and 5 of the accompanying drawings.
Published 1989 at The Patent Office, State House.86171 Eligh HolbornLondon WClR 4TP. Further copies maybe obtainedfrom The PatentOffiee. Sees Branch, St Mary Cray, Orpington, Kent BRS 3F.D. Printed by Multiplex techniques ltd, St Mary Cray, Kent, Con- 1/87 f
GB8827190A 1987-11-24 1988-11-22 Elastomeric pump casing seal Expired - Lifetime GB2212869B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AUPI560187 1987-11-24

Publications (3)

Publication Number Publication Date
GB8827190D0 GB8827190D0 (en) 1988-12-29
GB2212869A true GB2212869A (en) 1989-08-02
GB2212869B GB2212869B (en) 1992-05-06

Family

ID=3772601

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8827190A Expired - Lifetime GB2212869B (en) 1987-11-24 1988-11-22 Elastomeric pump casing seal

Country Status (4)

Country Link
US (1) US5029878A (en)
CN (1) CN1013986B (en)
CA (1) CA1325443C (en)
GB (1) GB2212869B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1065388B1 (en) * 1999-07-01 2004-09-01 Festo AG & Co Linear drive
CN103511321A (en) * 2012-08-03 2014-01-15 江西耐普矿机新材料股份有限公司 Mining heavy type slurry pump with water seal arranged at suction inlet
EP2971793A4 (en) * 2013-03-15 2016-11-23 Weir Slurry Group Inc Seal for a centrifugal pump

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE502146C2 (en) * 1991-11-05 1995-08-28 Goeran Anderberg Sealing arrangement for shaft penetrations
US5219461A (en) * 1992-04-28 1993-06-15 Baker Hughes Incorporated Reinforced elastomer lining for pump casing and associated method of manufacture
US5507503A (en) * 1994-12-05 1996-04-16 Itt Corporation Static seal in combination with interengaged components having complementary diagonal surfaces
DE19701872C2 (en) * 1997-01-21 1999-03-25 Daimler Benz Ag Housing for an air conditioning system for vehicles
US5954476A (en) * 1997-08-12 1999-09-21 Fasco Industries, Inc. Snap-fit blower housing assembly and seal method
US5941536A (en) * 1998-02-12 1999-08-24 Envirotech Pumpsystems, Inc. Elastomer seal for adjustable side liners of pumps
DE10061885A1 (en) * 2000-12-12 2002-07-04 Testo Gmbh & Co Kg sealing device
AU2003902995A0 (en) * 2003-06-13 2003-07-03 Lance Edward Duke Surfboard storage compartment
WO2005033517A2 (en) * 2003-10-02 2005-04-14 Warman Africa (Pty) Ltd Liners for pumps
WO2009026322A1 (en) * 2007-08-22 2009-02-26 Mp Pumps Inc. Self priming centrifugal pump
CN106949242B (en) * 2008-07-14 2018-11-13 伟尔矿物澳大利亚私人有限公司 Sealing element for providing sealing between the component of rotating machinery
EP2488276B1 (en) * 2009-10-14 2015-09-02 Donaldson Company, Inc. Filter cartridge with seal member and methods
CN102357432B (en) * 2011-07-20 2013-10-02 上海力申科学仪器有限公司 Leakage-proof rotor block
DE102012203615B4 (en) * 2012-03-07 2013-11-21 Hanning Elektro-Werke Gmbh & Co. Kg pump
US10309416B2 (en) 2012-11-29 2019-06-04 Ruhrpumpen Sa De Cv Seal system for centrifugal pumps having axially split casings
US9845874B2 (en) * 2014-02-06 2017-12-19 General Electric Company Compression seal bracket and system for generator cooler

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB995805A (en) * 1962-08-24 1965-06-23 Hamilton Kent Mfg Co Annular gasket
GB1436310A (en) * 1972-08-11 1976-05-19 British Steel Corp Pipe joints and sealing members therefor
GB1523880A (en) * 1974-12-09 1978-09-06 Polymers Marketing Ltd Const Seal
GB1595171A (en) * 1977-11-18 1981-08-12 Wavin Bv Sealing member
GB2127109A (en) * 1982-09-17 1984-04-04 Vetco Offshore Ind Inc Combined metal and elastomer seal
GB2144508A (en) * 1983-08-05 1985-03-06 Paragon Plastics Limited Pipe joints
EP0188300A1 (en) * 1985-01-14 1986-07-23 Wavin B.V. Method for manufacturing a sealing body, particularly for a pipe joint, and a sealing body produced by this method
GB2193540A (en) * 1986-06-27 1988-02-10 Nat Supply Co Sealing between casing head and hanger

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US3284145A (en) * 1965-06-07 1966-11-08 Mcgill Mfg Company Inc Sealed anti-friction bearing
US3467395A (en) * 1966-05-13 1969-09-16 Nippon Seiko Kk Lubricant seal having casing and its holding means
GB1260290A (en) * 1968-02-16 1972-01-12 British Ropes Ltd Fluid coupling
JPS50140752A (en) * 1974-04-21 1975-11-12
US4182519A (en) * 1978-01-24 1980-01-08 Ralph Wilson Resilient sealing ring
US4311317A (en) * 1979-08-20 1982-01-19 Bartels Harold U Lip and radial seal
US4396355A (en) * 1980-01-28 1983-08-02 United Kingdom Atomic Energy Authority Ejector
US4347033A (en) * 1980-02-19 1982-08-31 Possell Clarence R Concrete pump and method of using same
DE3113787C2 (en) * 1981-04-04 1985-08-22 Friedrich Wilh. Schwing Gmbh, 4690 Herne Transfer tube for concrete or thick matter piston pumps
JPS59144143U (en) * 1983-03-17 1984-09-26 豊田合成株式会社 Cylinder head cover gasket
DE3410211A1 (en) * 1984-03-20 1985-10-03 Gerhard Dr. 7900 Ulm Hudelmaier DEVICE FOR SEALING A CONCRETE PUMP
US4865517A (en) * 1988-07-11 1989-09-12 Heil-Quaker Corporation Blower with clam shell housing

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB995805A (en) * 1962-08-24 1965-06-23 Hamilton Kent Mfg Co Annular gasket
GB1436310A (en) * 1972-08-11 1976-05-19 British Steel Corp Pipe joints and sealing members therefor
GB1523880A (en) * 1974-12-09 1978-09-06 Polymers Marketing Ltd Const Seal
GB1595171A (en) * 1977-11-18 1981-08-12 Wavin Bv Sealing member
GB2127109A (en) * 1982-09-17 1984-04-04 Vetco Offshore Ind Inc Combined metal and elastomer seal
GB2144508A (en) * 1983-08-05 1985-03-06 Paragon Plastics Limited Pipe joints
EP0188300A1 (en) * 1985-01-14 1986-07-23 Wavin B.V. Method for manufacturing a sealing body, particularly for a pipe joint, and a sealing body produced by this method
GB2193540A (en) * 1986-06-27 1988-02-10 Nat Supply Co Sealing between casing head and hanger

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1065388B1 (en) * 1999-07-01 2004-09-01 Festo AG & Co Linear drive
CN103511321A (en) * 2012-08-03 2014-01-15 江西耐普矿机新材料股份有限公司 Mining heavy type slurry pump with water seal arranged at suction inlet
EP2971793A4 (en) * 2013-03-15 2016-11-23 Weir Slurry Group Inc Seal for a centrifugal pump
US9739285B2 (en) 2013-03-15 2017-08-22 Weir Slurry Group, Inc. Seal for a centrifugal pump

Also Published As

Publication number Publication date
CA1325443C (en) 1993-12-21
CN1034416A (en) 1989-08-02
GB2212869B (en) 1992-05-06
CN1013986B (en) 1991-09-18
GB8827190D0 (en) 1988-12-29
US5029878A (en) 1991-07-09

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20041122